The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/xpcom/string/src/nsTSubstringTuple.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,95 @@
     1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
     1.5 +/* vim:set ts=2 sw=2 sts=2 et cindent: */
     1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.9 +
    1.10 +
    1.11 +  /**
    1.12 +   * computes the aggregate string length
    1.13 +   */
    1.14 +
    1.15 +nsTSubstringTuple_CharT::size_type
    1.16 +nsTSubstringTuple_CharT::Length() const
    1.17 +  {
    1.18 +    uint32_t len;
    1.19 +    if (mHead)
    1.20 +      len = mHead->Length();
    1.21 +    else
    1.22 +      len = TO_SUBSTRING(mFragA).Length();
    1.23 +
    1.24 +    return len + TO_SUBSTRING(mFragB).Length();
    1.25 +  }
    1.26 +
    1.27 +
    1.28 +  /**
    1.29 +   * writes the aggregate string to the given buffer.  bufLen is assumed
    1.30 +   * to be equal to or greater than the value returned by the Length()
    1.31 +   * method.  the string written to |buf| is not null-terminated.
    1.32 +   */
    1.33 +
    1.34 +void
    1.35 +nsTSubstringTuple_CharT::WriteTo( char_type *buf, uint32_t bufLen ) const
    1.36 +  {
    1.37 +    const substring_type& b = TO_SUBSTRING(mFragB);
    1.38 +
    1.39 +    NS_ASSERTION(bufLen >= b.Length(), "buffer too small");
    1.40 +    uint32_t headLen = bufLen - b.Length();
    1.41 +    if (mHead)
    1.42 +      {
    1.43 +        mHead->WriteTo(buf, headLen);
    1.44 +      }
    1.45 +    else
    1.46 +      {
    1.47 +        const substring_type& a = TO_SUBSTRING(mFragA);
    1.48 +
    1.49 +        NS_ASSERTION(a.Length() == headLen, "buffer incorrectly sized");
    1.50 +        char_traits::copy(buf, a.Data(), a.Length());
    1.51 +      }
    1.52 +
    1.53 +    char_traits::copy(buf + headLen, b.Data(), b.Length());
    1.54 +
    1.55 +#if 0
    1.56 +    // we need to write out data into |buf|, ending at |buf+bufLen|.  so our
    1.57 +    // data needs to precede |buf+bufLen| exactly.  we trust that the buffer
    1.58 +    // was properly sized!
    1.59 +
    1.60 +    const substring_type& b = TO_SUBSTRING(mFragB);
    1.61 +
    1.62 +    NS_ASSERTION(bufLen >= b.Length(), "buffer is too small");
    1.63 +    char_traits::copy(buf + bufLen - b.Length(), b.Data(), b.Length());
    1.64 +
    1.65 +    bufLen -= b.Length();
    1.66 +
    1.67 +    if (mHead)
    1.68 +      {
    1.69 +        mHead->WriteTo(buf, bufLen);
    1.70 +      }
    1.71 +    else
    1.72 +      {
    1.73 +        const substring_type& a = TO_SUBSTRING(mFragA);
    1.74 +        NS_ASSERTION(bufLen == a.Length(), "buffer is too small");
    1.75 +        char_traits::copy(buf, a.Data(), a.Length());
    1.76 +      }
    1.77 +#endif
    1.78 +  }
    1.79 +
    1.80 +
    1.81 +  /**
    1.82 +   * returns true if this tuple is dependent on (i.e., overlapping with)
    1.83 +   * the given char sequence.
    1.84 +   */
    1.85 +
    1.86 +bool
    1.87 +nsTSubstringTuple_CharT::IsDependentOn( const char_type *start, const char_type *end ) const
    1.88 +  {
    1.89 +    // we start with the right-most fragment since it is faster to check.
    1.90 +
    1.91 +    if (TO_SUBSTRING(mFragB).IsDependentOn(start, end))
    1.92 +      return true;
    1.93 +
    1.94 +    if (mHead)
    1.95 +      return mHead->IsDependentOn(start, end);
    1.96 +
    1.97 +    return TO_SUBSTRING(mFragA).IsDependentOn(start, end);
    1.98 +  }